Geokge adamson



- G. ADAMSON.

Apparatus for Coating Fabrics with Fluid 0:" Semifluid Substances.

Patented Jany 1. i867.

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TQALL WHOM IT MAY CONGERNi Beeit known that I, GEORGE ADAMSON, of Philadelphia, Pennsylvania, have invented certain Apparatus for Coating Fabrics with Fluid or Semi-Fluid Substances; and'I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon. a I

My invention consists of certain simple apparatus, fully described hereafter, for imparting to paper or other fabric a uniform coating of paste, glue, or other fluid or semi-fluid substances, the apparatus being especially useful in the manufacture of sand and emery paper, and in the pasting of wall paper.

In order to enable others skilled in the art to which this most nearly appertains to make and use my invention, I will now proceed to describe its construction and operation.

I On reference to the accompanying drawing, which forms a part of this specification- Figure 1 is a front view of my apparatus for coating fabrics with fluid or semi-fluid substances.

Figure 2, an end view of the apparatus; and

Figure 3, a transverse vertical section.

. Similar letters refer to similar parts throughout the several views.

A is an oblong trough for containing the glue, paste, or other material which has to be imparted to the surface of the fabric, the opposite ends of this trough being carried upward so as to form the standards B and .B. D is a roller, consisting of a spindle, d, surrounded by and secured to a gum-elastic cylinder, the spindle turning in permanent bearings in the standards B and B. Directly above this roller D, and bearing on the same, is a metal roller, E, the journals of which turn in boxes, e, which are arranged to slide vertically in guides formed in the standards B and B, and which are controlled by set-screwsf, by means of which the upper roller may be caused to bear with more or lessforce on the lower roller, or the necessary depressing force may be applied to the upper roller by simple weights hung to its journals. The two rollers should be of the same diameter, (say about five inches,) and should be so geared together as to revolve at the same speed in the direction pointed out by the arrows, fig. 3, the lower roller being immersed to 'the extent of about one-third of its diameter in the paste, glue, or other materiaha, contained in the trough A. The paper or other fabric, y, passes in the direction of the arrow from an adjacent roll, between the two rollers, I) and E, partly round the latter roller, and thence to any desired point. Paste or glue carried up by the roller D is transferred to the paper, but the two rollers being in intimate contact with each other, the paste adhering to the fabric after it has passed between the-rollers is but a very thin film or coating, and this coating is of that uniformity which cannot be obtained by any system of revolving brushes or other like appliances. I have found by repeated experiments that this uniformity in the coating of paste or glue is attributable to the use of the gum-elastic roller D.

My invention'is especially useful in the manufacture ofsand and emery papers, the perfection of which depends mainly on the evenness of the coating of glue upon which the powdered quartz or emery has to be deposited.

It will be evident that the apparatus is simple in construction, and that it possesses the advantage of economy as regards the consumption of material, as no more paste or glue than is absolutely necessary for the purpose required is transferred to the paper.

I claim as my invention, and desire to secure by Letters Patent- The employment, substantially in the manner describechof the gum-elastic roller D, and the rigid roller E, for transferring fluid or semi-fluid substances to fabrics, in the manner described,

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE ADAMSON.

Witnesses:

CHARLES Barns, Jonu Dunrs. 

